24

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Retired federal agent Jack Bauer is pulled back into field work after CTU learns of an impending nuclear attack in Los Angeles.

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Jack goes undercover to find Joseph Wald, where he learns that CTU is going to be bombed. While Kim tries to save Meghan from her abusive father, Gary. Kate Warner becomes suspicious of sister's Middle-Eastern fiancé.

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Jack sends out a warning that CTU is the target of a terrorist attack. Director Mason leaves CTU to personally check up on a lead on the nuclear bomb's location.

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CTU is attacked and faces serious casualties. Jack discovers who gave Joseph Wald the schematics for CTU. President Palmer fires Rayburn after Kresge tells him about the 30-minute gap between Jack's warning and the bomb explosion.

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Mason and Jack make preparations to interrogate an old enemy who gave the terrorists access to CTU. Tony goes to the Warner household to check up on Reza's possible connection to Syed Ali.

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Jack takes charge of the Nina Meyers interrogation. Sherry returns with information on the conspiracy against President Palmer.

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Jack boards a plane with Nina Meyers and several FBI agents because they have to meet a contact in Visalia,California who has info on the bomb's location. Nina tries to escape after meeting the contact. President Palmer and Mike Novick try to ascertain NSA Director Stanton's loyalty. Mason tries to make contact with his estranged son. Tony takes Bob Warner and Reza to CTU for further questioning.

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Jack and Nina try to get more information out of her contact on the way back to LA. Tony learns of Bob Warner's status as a CIA contractor. Stanton expresses concerns about Sherry's presence as she tries to make a deal with a detained reporter.

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The plane carrying Jack and Nina is shot down and together they must fight off a group of soldiers. Mason plays Bob Warner against Reza to find out which one working with the terrorists. Kate Warner is captured and interrogated by Syed Ali. Mason reveals the truth of his condition to Tony.

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Jack is captured by Nina Meyers and used as leverage in an attempt to get a presidential pardon. President Palmer learns the identity of one of the conspirators in his administration. After being set free, Reza learns the identity of the person who set him up when he goes to get incriminating evidence on Bob. Jack begins to suspect the soldiers who shot him down were with the NSA as he heads to capture Syed Ali.

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Kate Warner leads Jack on mission to locate and id Syed Ali. President Palmer places Stanton under arrest and makes an out of character decision on how to handle the interrogation. CTU discovers that Marie killed Reza and the two agents trailing him.

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Jack tries to get information out of Syed Ali. Mason gets Bob Warner to reveal some previously classified history on Marie that paints Reza's murder in a new light. Lynne Kresge becomes suspicious of Sherry.

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Jack searches for the secondary team of Coral Snake Commandos as a Tactical Team gets closer to the bomb's location. Division sends in Brad Hammond to look into CTU LA's situation. Stanton finally reveals that he's known about the bomb all along and allowed it to be smuggled into the country.

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Jack and Kate try to get Marie to reveal the exact location of the bomb in the airfield. Mason steps down as Director after his condition worsens. President Palmer confronts Sherry.

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Jack must deal with the nuclear bomb at the airport. CTU discovers a recording implicating that Sayed Ali is supported by three presidents of Middle-Eastern countries.

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Jack gets back to CTU after the bomb exploded. The situation there is tense since Tony became head of the Unit, especially when a key witness is assassinated. President Palmer and his staff prepare a retaliation on the three countries involved with Ali.

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Jack and Kate leave CTU to meet with the lone surviving member of the Coral Snake Commandos who says he has evidence that the tape is fake. President Palmer wants to wait and see what Jack finds out before launching a retaliatory strike.

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Jack, Kate, and Yousef try to get Wallace to a hospital after he gets shot by unknown assailants. President Palmer tries to deal with civil unrest as Muslim communities across the country are targeted.

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Jack is captured by a group of men working for an oil magnate named Peter Kingsley who's looking to capitalize on the coming war. Lynne Kresge discovers that Vice-President Prescott is planning on seizing the presidency by way of the 25th Amendment. President Palmer deals with some increasingly impatient Joint Chiefs of Staff. Kate and Yusef are attacked by angry American citizens when they try to get the chip behind the Ali recording back to CTU.

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Jack tries to escape from the Kingsley's men after being tortured. Lynn Kresge tries to warn President Palmer about VP Prescott. Regional Director Ryan Chappelle returns to CTU and exerts his authority. Kate tries to retrieve the stolen computer chip. President Palmer begins to suspect something is wrong when Prescott won't return his phone calls.

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After saving Kate from her attackers Jack heads to meet Alex Hewitt who may be the person who designed the computer chip. President Palmer's ability to the run the country is questioned when the Vice-President and members of the cabinet invoke the 25th Amendment.

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Jack discovers that Shery Palmer is somehow involved in the conspiracy when he tries to talk to Alex Hewitt. Tony and Michelle make a critical decision on how to handle the Chappelle situation.

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Jack has Sherry contact Peter Kingsley who turns out to be the mastermind behind the tape. Mike Novick realizes that he has made a huge error in judgment in supporting Prescott. Deputy Regional Director Brad Hammond places Tony and Michelle under arrest.

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Three years later; CTU receives a threat that Mexican drug lord Hector Salazar is planning on releasing a deadly contagious virus in LA unless Jack gets his brother Ramone Salazar out of prison. President Palmer prepares for a presidential debate with Senator John Keeler.

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After Goss' infected body is dropped at the hospital Jack and Chase begin to trace his last known locations while CTU tries to figure out how the virus is gonna be unleashed to the public at large. Once they figure out it's gonna be spread through cocaine shipments CTU begins to track down drug dealers in East LA. President Palmer considers canceling the debate.

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Tony and one of Salazar's cronies close in on a young drug trafficker who may be unknowingly carrying the virus. Jack informs Kyle Singer's parents that he may be infected. Wayne becomes concerned over David's latest affair when he learns the woman's ex-husband will perjure himself over sworn testimony he gave years earlier unless the President pays him not to.

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In order to get Ramon out of prison Jack asks for President Palmer's permission to instigate a prison riot. Michelle takes over command of CTU after Tony is injured. Chase disobeys orders and fiercely interrogates Roman as Jack puts his plan into motion. President Palmer has Wayne call off the meeting with Anne's ex-husband. Drug dealer Kyle Singer is captured by Salazar's men.

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Jack and Ramon are captured by dangerous prison inmates after trying to escape. President Palmer begins his debate with Senator Keeler. At CTU, Chloe O'Brian discovers evidence of Jack's heroin addiction.

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Jack and Ramon try evade military helicopters when they make a run for a plane scheduled to leave for Mexico. Palmer cancels the debate. Kyle Singer learns that he is not infected with the virus. Kim discovers that Gael Ortega might be working with the Salazars.

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Ramon holds Jack hostage as they fly down to Mexico. Regional Director Chappelle interrogates Gael; Tony returns prematurely to CTU to reveal Gael's true allegiance. Chase disobeys orders and heads for Mexico to rescue Jack.

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Jack tries to regain the Salazars' trust when they make it to Mexico. President Palmer is angry with Tony over being left out of a secret operation. Chase is captured by Salazar's men.

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A snag in the sale of the virus leads the Salazars to question Jack's motivations and as a result they put his allegiances to the test. Claudia works to help Chase escape after Jack informs her of his real priorities. Tony's ability to run CTU is called into question. Palmer is put into a difficult position regarding his brother.

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In order to get closer to the virus, Jack tries to make Nina believe he still has feelings for her. Wayne tries to gain the trust of Julia Milliken when Alan Milliken starts making demands. Chase convinces Salazar's girlfriend to help him escape.

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Jack and Nina prepare to meet with Amador, the man selling the virus; CTU organizes an ambush. Ramon and Hector have a falling out. President Palmer asks his ex wife Sherry to help with the Milliken situation.

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Jack and Nina are double-crossed when Ramon steals the virus during the exchange with Amador. Sherry gains a short-lived advantage in dealing with Alan Milliken.

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Nina releases a deadly computer virus into CTU's systems after getting captured by Jack and Chase. Sherry runs out of options and decides to directly confront Alan Milliken but things go too far. Chloe and the rest of the tech crew work overtime to combat the virus.

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Regional Director Chappelle forces Jack to undergo a medical evaluation for his heroin addiction. Tony interrogates Nina Meyers. Julia Milliken confronts Sherry after Alan dies while Wayne and President Palmer prepare for the fallout. Nina tries to escape custody after collapsing during the interrogation.

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Amador and his people receive orders from their client to release the virus in the Chandler Plaza Hotel. Jack closes in on Amador but it's too late. Michelle and Gael alert the Chandler's Chief of Security to the dangers of the threat.

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After the interrogation goes nowhere, Jack and Chase let Amador escape hoping he will lead them to his client's location. Michelle places the hotel under quarantine and must make a difficult decision in how to handle the ensuing panic. President Palmer is put into a awkward position when handling the Milliken situation.

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President Palmer gives into Stephen Saunders's strange demand of placing an seemingly nondescript phrase into a speech in the hopes of delaying another viral outbreak. Michelle takes control of the situation inside the hotel. Jack and Chase bring a suspect to the local branch of MI-6 as Saunders launches an attack on the building.

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Jack has to comply with another one of Saunders' demands: the death of Regional Director Ryan Chappelle. Michelle discovers that one of the infected hotel patrons got out before the quarantine was enforced.

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When CTU learns that Saunders has a daughter attending an LA university they must inform Jack the only match for a bait and switch operation is Kim Bauer. Chase tracks down the man who escaped the hotel quarantine. Palmer informs his cabinet on the dangers of the threat.

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Jack works on using Saunders' daughter in an attempt to gain control of the virus. Michelle waits to find out if she's infected. Palmer navigates around a angry and confused press. Saunders starts making demands on Tony.

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Tony works covertly to find a way to get Janes Saunders out of CTU and deliver her to Saunders before Jack and Chase find him. Senator Keeler receives some damaging information on President Palmer from a surprising source.

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Jack and Tony clash as they wait for the time of hostage exchange with Saunders. Senator Keeler confronts President Palmer about the Milliken cover-up while Wayne initiates a secret operation against Sherry.

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Jack and Chase try to track down the location of vials containing the virus. Wayne breaks into Sherry's house to get incriminating evidence as a paranoid Julia Milliken confronts Sherry.

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A train collides with a truck filled with explosives. A man is shot. Over the phone, Jack Bauer hears the screams of his kidnapped sweetheart.

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Jack is in trouble with his supervisor, and he's on the trail of a killer.

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Jack trails a suspect while his supervisor has ordered C.T.U. to bring both of them in.

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Jack creates a faux-hostage crisis in a convenience store trapping Kalil and several innocent bystanders to buy Chloe more time to get the surveillance satellite working properly. Dina's murders Behrooz's girlfriend after she becomes suspicious. Audrey and Secretary Heller try to escape.

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Jack and Director Driscoll agree to a truce and work together after the police make a mistake in handling the Kalil situation which means that Jack also has to find a new lead. The terrorist begin to threaten Audrey unless Heller confesses to “war crimes” on camera in an hour.

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Jack initiates a fierce gun battle with the terrorists as he races to rescue Audrey and Secretary Heller before the military strikes. Dina is shocked to learn that Navi and Marwan plan to have Behrooz killed. Secretary Heller learns his son is a suspect and allows the interrogation to continue. Curtis Manning learns that the briefcase stolen from the train bombing contains a Dobson Override that could potentially give terrorists control of America's 104 nuclear plants.

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Jack takes Audrey into the field in order to ID a suspect she recognized from the compound, but the terrorists learn where they are and pin them down. Jack calls on an old friend to escape. Dina tries to get to Behrooz before Navi does. Edgar Stiles works overtime to get back control of 87 to 98 nuclear plants by taking their systems off-line before the Override gets to them.

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Jack and Audrey hide out with Tony Almeida after escaping from the terrorists and learn the man they are looking for is an employee for McClennan-Forrester. Behrooz takes Dina to the hospital to get medical attention. President Keeler orders six cities to be evacuated. Secretary Heller tries to flush out the mole in CTU, but the evidence points in the wrong direction.

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Jack and Tony stumble on to Dina and Behrooz's trail after a key suspect has been assassinated. Edgar tries all he can to get his mother out of the fallout zone of the San Gabriel Island nuclear power station. Driscoll and Curtis cover their tracks following the revelation about Marianne. Navi closes in on Behrooz when he tries to get medication for Dina.

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Jack races to save Behrooz from his father when the situation turns into a hostage crisis. Dina points Jack and Tony to a safe-house where they find evidence that points to Paul Raines' involvement with the terrorists. Marianne leads Curtis to a computer that contains info on the terrorists, but Curtis feels like it could be a trap.

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After finding out that Audrey's husband, Paul Raines, may have information about the override, Jack decides it's time for some “shock treatment”. The lead that Curtis was following up on at the Rockland Building proves to be vital, just as the remaining 5 nuclear reactors prepare to meltdown. Meanwhile, Tony does some interrogating of his own, and Driscoll deals with devastating news.

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Jack and Paul Raines visit the corporate headquarters of McLennan-Forster, the defense contractor that employed Marwan. The company executives activate an EMP bomb to destroy incriminating evidence in order to protect themselves. Tony is given temporary command of CTU after Driscol resigns following her daughter's suicide.

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Jack and Paul enlist civilian help when they must fend off mercenaries from McLennan-Forster. Tony discovers that Michelle is taking over command of CTU. Marwan orders an underling to kill an Air Force pilot and his family and assume the pilot's identity.

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Jack and Dina's attempt to infiltrate one of Marwan's terrorist cells backfires on them. Michelle orders Chloe back to work when Edgar begins to crack due to emotional pressure. Paul is taken into surgery after getting shot. Anderson gains access to an airfield and gets closer to the stealth bomber.

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In order to buy more time for Anderson to close in on Air Force One, Marwan calls CTU and tells Michelle that he is willing to trade Jack for Behrooz. Bill Buchanan arrives at CTU and assumes command. Curtis interrogates Behrooz for more information on Marwan.

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CTU raids Marwan's headquarters but somehow allows Marwan to slip through their fingers during the confusion. Jack learns that the trade-off was nothing more than another ruse. Jack tries to talk Anderson out of the mission, but it's too little too late as far Anderson is concerned.

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Jack's only hope of keeping the President's nuclear football (a computer containing the codes of America's nuclear facilities) out of Marwan's hands lies in two innocent campers who witnessed the crash of Air Force One. Mike Novick wants to immediately have Presidential authority shifted over to Vice President Charles Logan.

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Jack discovers that Marwan's new objective is to find and activate a nuclear warhead after he realizes pages from “the football” are missing. Logan's presidency is not off to a good start when he starts showing signs of fear. CTU sends Curtis to intercept one of Marwan's subordinates but a lawyer from Amnesty Global stalls the interrogation.

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Chloe is sent into the field for the first time to look into the report of a woman who claims her boyfriend is part of the conspiracy. Mike Novick calls in Former President David Palmer to assist President Logan. Jack's methods are questioned.

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Palmer authorizes a extraction mission on the Chinese Embassy in LA to be lead by Jack and Curtis. The intended target is injured during the raid and the Chinese Consul is shot in friendly fire by his own people. Jack forces the doctors to stop working on Paul and help the suspect.

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As Jack and Curtis close in on Marwan's location, Buchanan looks for an alibi after a Chinese representative investigates the raid on the embassy. Logan clashes with Palmer.

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Jack fails to stop Marwan from launching the nuclear warhead. Richard Heller becomes a suspect again and James Heller leads the interrogation. Mandy takes Tony hostage after he checks up on Richard's information.

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The Chinese representative kidnaps CTU Agent Howard Bern in an attempt to learn who lead the raid on the embassy. Palmer and Logan may have to evacuate major U.S. cities in the hopes of preventing nuclear disaster. Michelle tries to save Tony.

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The Russian and US Presidents are set to sign an anti-terror treaty when assassinations rock Los Angeles.

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Evidence links Jack Bauer to a dastardly assassination; he goes rogue to clear his name while terrorists work below the radar.

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Jack hides in the Ontario airport where terrorists are making demands. The First Lady looks for evidence of a phone call from David Palmer the night before.

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Jack allows himself to be captured to save Derek. CTU must attack the airport terrorists before the treaty can be signed.

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Jack is in custody at CTU, in danger of assassination; the President won't believe his own wife; Curtis investigates canisters taken from the airport.

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Bauer goes to Mike Novick with evidence implicating the President's chief of staff. Nerve gas arrives at the port: is the danger to L.A. or elsewhere?

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President Logan reinstates Jack to CTU when he learns that the US(not Russia) is in danger. Jack captures and must negotiate with a scientist who helped Bierko open the nerve gas canisters. President Logan must decide how to handle revealing Walt's complicity to the public.

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Jack poses as a terrorist and hundreds of lives are at risk in a shopping mall. Meanwhile, the President must manage a high-profile suicide.

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Bierko contacts President Logan and demands information about the route of President Suvarov's motorcade. Jack races to protect a witness who helped supply Bierko the nerve gas cannisters before Bierko has him killed.

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The First Lady endangers her own life to save others while Jack heads to Omicron International to meet Christopher Henderson, a former colleague from CTU.

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As Jack tracks Henderson, CTU discovers that terrorists planning to release nerve gas in a hospital.

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A terrorist infiltrates CTU, Kim is reunited with her father, and the Vice-President arrives to handle the crisis.

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While CTU itself deals with an attack, the Vice President tries to convince the President to declare martial law in Los Angeles.

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Homeland Security takes control of CTU. President Logan orders martial law. Wayne Palmer goes to meet with Aaron Pierce. Jack interferes with a German spy's undercover operation while searching for Bierko.

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Audrey faces custody and torture. Bierko moves nerve gas canisters to the Wilshire Gas Company. Aaron Pierce goes looking for Wayne Palmer.

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CTU makes Christopher Henderson their priority while dealing with the restructuring into Homeland Security. Jack and Wayne must save Evelyn Martin's daughter in order to get crucial information about the conspiracy.

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Jack and Wayne must retrieve a digital recording from a safe deposit box before Henderson's men get to it. President Logan starts to cover his tracks when he orders Homeland Security to issue an arrest warrant for Jack.

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Jack and Audrey show Secretary Heller the recording but are shocked by the actions he decides to take in handling it. Karen Hayes works to cut off Jack's support inside CTU. Mike Novick begins to become suspicious of President Logan's actions.

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Jack and Buchanan work outside the chain of command by recruiting Curtis for help. Homeland Director, Karen Hayes, begins to see discrepancies in the President's actions and begins to suspect his motives.

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Jack's search for the recording takes him to an airport in the Valley. Bill Buchanan helps covertly.

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When President Logan realizes that he's been backed into a corner, he resorts to a drastic solution. While Karen becomes an ally in Jack's quest to expose Logan, Miles changes allegiances, and a villain from the past returns.

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Vladimir Bierko manages to escape custody and take control of a submarine, the Natalia, bent on getting his revenge against the US. Jack reluctantly teams up with Henderson in hopes of getting a lead on Bierko, while Martha helps Aaron.

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Jack Bauer teams up with Christopher Henderson to put an end to Vladimir Bierko's terrorism.

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A new U.S. President has negotiated Jack's release from a Chinese prison so Jack can stop a series of terror attacks… with his life.

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Can Jack and an unlikely ally stop a suicide bomber and track the architect of these acts of terror?

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Jack and former terrorist leader turned peacemaker track a suspicious man to a self-storage facility.

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While Jack has problems with Curtis, CTU discovers a nuclear threat and raids a terrorist warehouse. A shocking explosion shakes LA.

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Four more “suitcase nukes” are out there, and Jack's only lead takes him to the home of his brother.

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Jack finds himself confronting his father while the lead terrorist needs help if he's to explode the remaining bombs.

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Family troubles: Jack with his brother and father while Morris worries about his own brother.

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The President meets with a known terrorist while Jack searches for Morris, Fayed seeks a trigger, and Tom Lennox makes a choice.

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Jack looks for a Russian national while his father plots with shadowy patriots: the President and the Constitution may be in danger.

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While Jack looks for Gredenko and tries to save Josh, White House intrigue deepens.

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Jack's search takes him to the home of an old enemy, while a bomber slips into the White House.

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Jack's search takes him to the Russian consulate, while the Vice President contemplates a sweeping executive order.

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The search for Gredenko finds Jack hunted inside the Russian consulate and a former President calling on his ex-wife.

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CTU's satellite tracking system is compromised; a bomb-carrying drone heads toward an unknown city; and, US forces prepare for a nuclear retaliation on the Middle East.

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Jack enlists the help of an autistic man in the search for Gredenko, and Sandra Palmer makes a fateful decision.

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Jack baits Fayed with Gredenko, while the President faces a challenge to his office.

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To find the remaining suitcase bombs, both Jack and the President set up bluffs.

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The Chinese want Jack to give them Russian nuclear technology, and the President wants the Vice President's resignation.

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Jack goes rogue to save a woman, and the White House needs a fall guy for Fayed's success.

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A missing computer circuit board: the Russians get wind of Chinese espionage, the White House must find a leak, and CTU interrogates an unlikely witness.

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Russian ire worries the White House, while the Chinese take on CTU, and the damaged circuit board is in surprising hands.

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Russia presses the White House; Jack must try simultaneously to thwart the Chinese and his oldest antagonist.

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To avert a war with Russia, the White House orders a trade of Jack's nephew for the circuit board, and puts Jack in custody so he won't stop the exchange.

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The FBI pulls Jack Bauer from a Senate hearing because an old pal of Jack's may be planning terror, while the President calls for military action in Africa.

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A device that overrides the nation's homeland systems falls into enemy hands while the President's husband investigates his son's recent death.

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Conspiracy may be deep within the President's administration, her dead son may not have killed himself, and a colleague Jack thought was dead has turned terrorist: how are these surprises related?

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Bauer decides to trust two former CTU colleagues, and he helps a third escape from the FBI.

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Jack helps terrorists kidnap a deposed prime minister while an FBI agent and the President's spouse are in grave danger.

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The President defies murderous demands while Jack and CTU colleagues unearth an FBI agent and plant a wire on a deposed prime minister. Who's in the conspiracy?

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Jack and his patchwork team race to prevent an act of terror against a chemical plant; the President's husband and an African prime minister remain in danger.

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Jack and an FBI agent believed dead have less than an hour to rescue the First Gentleman from certain death. Can they trust anyone?

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The President rushes to the hospital as Dubaku plans an escape to Belize with Marika. The mole at the FBI keeps burrowing.

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Moles within the U.S. government go to great lengths to protect their anonymity when they fear that Dubaku's list of corrupt employees will fall into FBI hands.

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Intelligence suggests another attack is imminent, so Jack goes to the White House to interrogate a Senator's chief of staff.

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General Juma's direct attack on the White House endangers Jack, Bill Buchanan, and the President's daughter.

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While the President is in danger and the Vice President vacillates, Jack and Bill try to counter Juma, realizing later that his plot is part of a larger threat.

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Jack visits a U.S. Senator in pursuit of links between Juma and Starkwood, an international corporation. Security leaks at the FBI continue as they hunt for Jack.

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While the FBI hunts for Jack, he and another ex-CTU rogue search for biological weapons that Starkwood has smuggled into the U.S.

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After Jack is exposed to a biological agent, Moss leads an FBI strike force onto the Starkwood compound in search of weapons of mass destruction.

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Jack battles the effects of toxic exposure; a reporter squeezes the President's chief of staff; and, it's a race against time to locate weapons on the Starkwood compound.

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The President meets with Jonas Hodges while Jack battles toxins in his body and works with someone inside the Starkwood compound: can they destroy the bio-weapons before rockets rain death on U.S. cities?

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As grief and loss begin to overwhelm Jack and those he's close to, a double-cross goes undetected, a canister of toxic gas is in enemy hands, and a suicide is strongly suggested.

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A shadowy group of powerful people decide to stage another attack as Jack rues trusting the wrong person, Jonas seeks asylum, and the CTU servers boot up.

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Olivia wants revenge against Jonas, while Jack, Chloe, Janis, and Renee try to locate a young Arab who's being set up to take the fall for a new terror attack.

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Jack and Renee pursue the final canister; it's on the Metro, set to explode. Chloe and Janis match wits. Kim sits at the airport about to fly home. A cover-up begins at the White House.

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Jack is abducted for nefarious purposes, Kim sits in danger at the airport, and Olivia matches wits with Ethan Kanin.

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A plot to assassinate the President of the Islamic Republic, at the U.N. building, comes to Jack Bauer's attention.

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C.T.U. detains a reporter it suspects of helping assassins, while Jack and Chloe start their own investigation.

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Jack and Chloe race against time to try to thwart a well-planned assassination of the President of the Islamic Republic.

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CTU wants ex-FBI agent, Renee Walker, to infiltrate a Russian gang that's selling weapon-grade enriched uranium to the assassination plotters.

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The Russians mistrust Renee, U.S.-Kamistan negotiations hit a snag, and the past of CTU analyst Dana Walsh becomes her nightmare.

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Jack is set up, Renee makes a sacrifice, Dana sends her ex into a police warehouse, an arms trader deals with his sons, and the President buys time.

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President Hassan's actions become paranoid and Dana's ex faces capture, while Renee and Jack kick open a hornet's nest among New York's Russian underworld.

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While nuclear materials are en route to Kamistanis attempting a coup, Dalia confronts her father, Dana makes a decision, and Jack endures torture.

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The White House wants a fall guy, Jack tries to protect that person, Dana goes after her ex, Cole follows her, and CTU gets help from an unlikely source.

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President Taylor asks for President Hassan's help, Kayla goes missing, a New Jersey swamp claims two bodies, and Jack sets up a ruse to flush out Kamistani rebels.

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A mother wants to save her son, an estranged couple reconnects to look for their daughter, and Jack races against the clock to dissuade a suicide bomber.

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Nuclear fuel rods await transport into Manhattan, Jack pursues a lead to a hotel, Kayla is in danger, and a Southern probation officer wants information from Dana.

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Chloe goes up against NSA testosterone, Jack and Cole are in a firefight as the nuclear fuel rods are en route to Manhattan, and an evacuation from the UN is imminent.

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Kamistani rebels give President Taylor an hour to turn over Hassan, sedition strikes Taylor's administration, CTU harbors a traitor, and Jack walks into an ambush.

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As dawn breaks over New York, President Taylor endures a game-changing setback as the threat of mass destruction looms. Meanwhile, President Hassan makes a shocking decision that surprises his loved ones. But before long, trusted confidantes will become enemies of the state, and it's only the beginning of the betrayals that are to come as the race against time ticks on.

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A traitor makes a deal for immunity while Jack and Rene race uptown to rescue a hostage. The Russian ambassador asks President Taylor for news of Hassan.

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President Taylor requests a woman's help and brings in a disgraced ex-President who may have leverage with the Russians; Jack and Rene take their leave of CTU, and Chloe gets a promotion.

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President Taylor's envoy to the Russians persuades them to return to the peace table, but at what cost? Jack goes to CTU to interrogate a nearly-forgotten traitor, and the President decides to talk to Jack there.

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President Allison Taylor faces impossible choices and much to the dismay of CTU, she enlists a private security firm to complete a sensitive task led by Mark Bledsoe. Meanwhile, Jack calls in a favor to his old friend Rick Vickers before he embarks upon a crucial mission of his own.

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While the media interview the peace delegates, Jack and Cole have gone rogue to rescue a traitor being tortured by off-the-grid operatives; Logan gets President Taylor to approve putting his aide in charge of the manhunt.

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While delegates review the peace agreement, Jack searches for evidence of Russian involvement in the day's tragedies, covered up at the highest levels. Ex-President Logan is desperate to neutralize Jack.

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Jack's rogue operation includes kidnapping a high-profile target; pools of blood, a knife wound, and Chloe's mistrust of her new supervisor add texture while President Taylor feels the loneliness of power.

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The Russian Federation President arrives to sign the accord, Jack wants justice, Logan stays in pursuit, Dalia has a realization, and President Taylor rattles her sabers. Chloe tests her mettle.

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After four years off the grid, Jack is apprehended in London by the CIA – on the very day that President James Heller arrives. As the President faces political pressure over a US drone program run from a UK-based base, only disgraced agent Kate Morgan suspects that Jack's capture was all too easy.

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Jack and Chloe are on the trail of a hacker who might lead them to whoever is behind an assassination attempt on President Heller… but Kate is hot on Jack's trail.

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Kate Morgan continues her hunt for Jack, as President Heller prepares to address Parliament after a devastating attack. Margot Al-Harazi proves she is willing to sacrifice anything for revenge.

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The terror threat escalates as Jack heads for the U.S. Embassy with the CIA closing in on him. Meanwhile, Margot asserts her authority with unthinkable force; President Heller makes an impassioned speech to Parliament; and Kate takes matters into her own hands.

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An unlikely duo joins forces to forestall an impending attack. The terrorist reveals her demands. The President orders a military lockdown, but it may be too late.

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As the smoke clears after the devastating events of the first five hours, tensions between President Heller and Prime Minister Davies boil over, and one of them decides to take matters into his own hands. In the meantime, Jack proposes a plan to locate Margot by using someone unexpected as his unsuspecting bait. Back at the CIA in London, Jordan raises suspicions about Kate's husband.

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Jack and Kate race to save the life of a player tied to the terror threat; Jordan faces a perilous mission; President Heller engages Margot to put an end to her attacks.

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Jack Bauer and President Heller endure the unthinkable to thwart the terror attacks of mastermind Margot Al-Harazi. Meanwhile, CIA agent Jordan Reed faces a life-or-death struggle and Kate takes drastic measures to track down Margot before it's too late.